:root {
    --header-top-bg: #f0f8f7;
    --header-text: #333333;
    --header-text-muted: #8f8f8f;
    --header-text-light: #a3a3a3;
    --header-accent: #4a8c88;
    --header-accent-dark: #3d7572;
    --header-logo-bg: #b8d9d6;
    --header-logo-icon: #4a8c88;
    --header-white: #ffffff;
    --header-container: 1320px;
    --header-radius-pill: 999px;
    --header-radius-circle: 50%;
    --header-mobile-breakpoint: 992px;
    --header-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --header-ease-in: cubic-bezier(0.4, 0, 0.2, 1);
    --header-open-duration: 0.5s;
    --header-close-duration: 0.55s;
}

.site-header {
    width: 100%;
    position: relative;
    z-index: 100;
}

.site-header__container {
    max-width: var(--header-container);
    margin: 0 auto;
    padding: 0 24px;
}

/* Top bar */
.site-header__top {
    background: var(--header-top-bg);
}

.site-header__top .site-header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    min-height: 88px;
    padding-top: 14px;
    padding-bottom: 14px;
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    flex-shrink: 0;
    min-width: 0;
}

.site-header__logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--header-radius-circle);
    background: var(--header-logo-bg);
    color: var(--header-logo-icon);
    flex-shrink: 0;
    overflow: hidden;
}

.site-header__logo--image {
    background: transparent;
}

.site-header__logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--header-radius-circle);
}

.site-header__brand-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.site-header__company-name {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--header-text);
    letter-spacing: -0.01em;
}

.site-header__tagline {
    font-size: 12px;
    font-weight: 400;
    line-height: 1.35;
    color: var(--header-text-muted);
    max-width: 280px;
}

.site-header__contacts {
    display: flex;
    align-items: center;
    gap: 28px;
    flex: 1;
    justify-content: center;
    min-width: 0;
}

.site-header__contact {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    min-width: 0;
}

.site-header__icon-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--header-radius-circle);
    background: var(--header-white);
    color: #6b6b6b;
    flex-shrink: 0;
}

.site-header__phone {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--header-text);
    white-space: nowrap;
}

.site-header__address-text {
    font-size: 12px;
    font-weight: 400;
    line-height: 1.35;
    color: var(--header-text-light);
    white-space: nowrap;
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.site-header__cta {
    padding: 12px 22px;
    border: none;
    border-radius: var(--header-radius-pill);
    background: var(--site-button-bg, var(--header-white));
    color: var(--site-button-text, var(--header-accent));
    font-size: 11px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease;
}

.site-header__cta:hover {
    background: var(--site-button-bg-hover, var(--site-button-bg, var(--header-white)));
    color: var(--site-button-text-hover, var(--header-accent-dark));
}

.site-header__cta--mobile {
    width: 100%;
    padding: 14px 24px;
    font-size: 12px;
}

/* Burger */
.site-header__burger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: var(--header-radius-circle);
    background: var(--header-white);
    color: var(--header-text);
    flex-shrink: 0;
    transition: background-color 0.2s ease;
}

.site-header__burger:hover {
    background: #fafafa;
}

.site-header__burger-box {
    position: relative;
    display: block;
    width: 20px;
    height: 14px;
}

.site-header__burger-line {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.35s var(--header-ease-out), top 0.35s var(--header-ease-out), opacity 0.2s ease;
}

.site-header__burger-line:nth-child(1) {
    top: 0;
}

.site-header__burger-line:nth-child(2) {
    top: 6px;
}

.site-header__burger-line:nth-child(3) {
    top: 12px;
}

.site-header__burger--active .site-header__burger-line:nth-child(1),
.site-header__burger-box--active .site-header__burger-line:nth-child(1) {
    top: 6px;
    transform: rotate(45deg);
}

.site-header__burger--active .site-header__burger-line:nth-child(2),
.site-header__burger-box--active .site-header__burger-line:nth-child(2) {
    opacity: 0;
}

.site-header__burger--active .site-header__burger-line:nth-child(3),
.site-header__burger-box--active .site-header__burger-line:nth-child(3) {
    top: 6px;
    transform: rotate(-45deg);
}

/* Desktop navigation */
.site-header__nav {
    background: var(--header-white);
}

.site-header__nav .site-header__container {
    display: flex;
    align-items: center;
    min-height: 52px;
}

.site-header__menu {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px 28px;
    margin: 0;
    padding: 12px 0;
    list-style: none;
}

.site-header__menu-link {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.3;
    color: #6d6d6d;
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.site-header__menu-link:hover,
.site-header__menu-link--active {
    color: var(--header-text);
}

/* Mobile fullscreen menu */
.site-header__mobile {
    position: fixed;
    inset: 0;
    z-index: 200;
    visibility: hidden;
    pointer-events: none;
}

.site-header__mobile-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 100dvh;
    background: var(--header-white);
    transform: translateY(-100%);
    transition: transform var(--header-close-duration) var(--header-ease-in);
    will-change: transform;
}

.site-header__mobile--open,
.site-header__mobile--closing {
    visibility: visible;
}

.site-header__mobile--open {
    pointer-events: auto;
}

.site-header__mobile--closing {
    pointer-events: none;
}

.site-header__mobile--open .site-header__mobile-panel {
    transform: translateY(0);
    transition: transform var(--header-open-duration) var(--header-ease-out);
}

.site-header__mobile--closing .site-header__mobile-panel {
    transform: translateY(-100%);
    transition: transform var(--header-close-duration) var(--header-ease-in);
}

.site-header__mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    background: var(--header-top-bg);
    flex-shrink: 0;
    opacity: 1;
    transition: opacity 0.3s var(--header-ease-in);
}

.site-header__mobile--closing .site-header__mobile-header {
    opacity: 0.6;
    transition-duration: 0.25s;
}

.site-header__brand--mobile {
    flex: 1;
    min-width: 0;
}

.site-header__brand--mobile .site-header__company-name {
    font-size: 16px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-header__mobile-nav {
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 8px 20px 24px;
}

.site-header__mobile-menu {
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-header__mobile-menu .site-header__menu-item {
    opacity: 0;
    transform: translateY(-16px);
    transition:
        opacity 0.35s var(--header-ease-in),
        transform 0.35s var(--header-ease-in);
}

.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item {
    opacity: 1;
    transform: translateY(0);
    transition:
        opacity 0.4s var(--header-ease-out),
        transform 0.4s var(--header-ease-out);
}

.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(1) { transition-delay: 0.08s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(2) { transition-delay: 0.12s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(3) { transition-delay: 0.16s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(4) { transition-delay: 0.2s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(5) { transition-delay: 0.24s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(6) { transition-delay: 0.28s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(7) { transition-delay: 0.32s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(8) { transition-delay: 0.36s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(9) { transition-delay: 0.4s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(10) { transition-delay: 0.44s; }
.site-header__mobile--open .site-header__mobile-menu .site-header__menu-item:nth-child(11) { transition-delay: 0.48s; }

.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item {
    opacity: 0;
    transform: translateY(-14px);
    transition:
        opacity 0.28s var(--header-ease-in),
        transform 0.28s var(--header-ease-in);
}

.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(11) { transition-delay: 0s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(10) { transition-delay: 0.03s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(9) { transition-delay: 0.06s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(8) { transition-delay: 0.09s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(7) { transition-delay: 0.12s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(6) { transition-delay: 0.15s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(5) { transition-delay: 0.18s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(4) { transition-delay: 0.21s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(3) { transition-delay: 0.24s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(2) { transition-delay: 0.27s; }
.site-header__mobile--closing .site-header__mobile-menu .site-header__menu-item:nth-child(1) { transition-delay: 0.3s; }

.site-header__mobile-menu .site-header__menu-link {
    display: block;
    padding: 14px 0;
    font-size: 18px;
    font-weight: 500;
    line-height: 1.3;
    color: #5a5a5a;
    white-space: normal;
    border-bottom: 1px solid #f0f0f0;
}

.site-header__mobile-menu .site-header__menu-link--active {
    color: var(--header-accent);
    font-weight: 600;
}

.site-header__mobile-footer {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px 20px calc(20px + env(safe-area-inset-bottom));
    background: var(--header-top-bg);
    opacity: 0;
    transform: translateY(12px);
    transition:
        opacity 0.4s var(--header-ease-out) 0.2s,
        transform 0.4s var(--header-ease-out) 0.2s;
}

.site-header__mobile--open .site-header__mobile-footer {
    opacity: 1;
    transform: translateY(0);
}

.site-header__mobile--closing .site-header__mobile-footer {
    opacity: 0;
    transform: translateY(16px);
    transition:
        opacity 0.25s var(--header-ease-in),
        transform 0.25s var(--header-ease-in);
}

.site-header__mobile-phone {
    font-size: 20px;
    font-weight: 700;
    color: var(--header-text);
    text-decoration: none;
}

.site-header__mobile-address {
    margin: 0;
    font-size: 13px;
    line-height: 1.4;
    color: var(--header-text-light);
}

@media (max-width: 1280px) {
    .site-header__top .site-header__container {
        flex-wrap: wrap;
        justify-content: flex-start;
        row-gap: 16px;
    }

    .site-header__contacts--desktop {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .site-header__actions--desktop {
        margin-left: auto;
    }
}

@media (max-width: 991px) {
    .site-header__container {
        padding: 0 16px;
    }

    .site-header__top .site-header__container {
        flex-wrap: nowrap;
        min-height: 72px;
        padding-top: 12px;
        padding-bottom: 12px;
        gap: 12px;
    }

    .site-header__contacts--desktop,
    .site-header__actions--desktop,
    .site-header__nav--desktop {
        display: none;
    }

    .site-header__burger {
        display: flex;
    }

    .site-header__brand {
        flex: 1;
        min-width: 0;
    }

    .site-header__company-name {
        font-size: 16px;
    }

    .site-header__tagline {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        max-width: none;
    }

    .site-header__logo {
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 375px) {
    .site-header__container {
        padding: 0 12px;
    }

    .site-header__company-name {
        font-size: 15px;
    }

    .site-header__tagline {
        font-size: 11px;
    }

    .site-header__mobile-menu .site-header__menu-link {
        font-size: 17px;
        padding: 12px 0;
    }

    .site-header__mobile-header {
        padding: 14px 12px;
    }

    .site-header__mobile-nav {
        padding: 4px 12px 20px;
    }

    .site-header__mobile-footer {
        padding: 16px 12px calc(16px + env(safe-area-inset-bottom));
    }
}

@media (prefers-reduced-motion: reduce) {
    .site-header__mobile-panel,
    .site-header__burger-line,
    .site-header__mobile-menu .site-header__menu-item,
    .site-header__mobile-footer,
    .site-header__mobile-header {
        transition-duration: 0.01ms;
        transition-delay: 0s;
    }
}